Messages in this thread Patch in this message | | | From | NeilBrown <> | Date | Wed, 13 Dec 2017 14:15:54 +1100 | Subject | [PATCH 01/12] staging: lustre: use list_last_entry to simplify fld_cache_shrink |
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Using list_empty() and list_last_entry() makes the code clearer, and allows a local variable to be discarded.
Signed-off-by: NeilBrown <neilb@suse.com> --- drivers/staging/lustre/lustre/fld/fld_cache.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/lustre/lustre/fld/fld_cache.c b/drivers/staging/lustre/lustre/fld/fld_cache.c index 7d6a7106c0a5..ecf8b9e1ed5c 100644 --- a/drivers/staging/lustre/lustre/fld/fld_cache.c +++ b/drivers/staging/lustre/lustre/fld/fld_cache.c @@ -213,19 +213,18 @@ static inline void fld_cache_entry_add(struct fld_cache *cache, */ static int fld_cache_shrink(struct fld_cache *cache) { - struct fld_cache_entry *flde; - struct list_head *curr; int num = 0; if (cache->fci_cache_count < cache->fci_cache_size) return 0; - curr = cache->fci_lru.prev; - while (cache->fci_cache_count + cache->fci_threshold > - cache->fci_cache_size && curr != &cache->fci_lru) { - flde = list_entry(curr, struct fld_cache_entry, fce_lru); - curr = curr->prev; + cache->fci_cache_size && + !list_empty(&cache->fci_lru)) { + struct fld_cache_entry *flde = + list_last_entry(&cache->fci_lru, + struct fld_cache_entry, fce_lru); + fld_cache_entry_delete(cache, flde); num++; }
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